AT&T Store at 5507 Nesconset Hwy

10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PMClosed Today
Map Pin Marker

Address

5507 Nesconset Hwy
Suite 3
Mount Sinai, New York 11766
US

Phone

(631) 743-9807(631) 743-9807
Clock

Hours

Day of the WeekHours
Monday10:00 AM - 7:00 PM
Tuesday10:00 AM - 7:00 PM
Wednesday10:00 AM - 7:00 PM
Thursday10:00 AM - 7:00 PM
Friday10:00 AM - 7:00 PM
Saturday10:00 AM - 7:00 PM
SundayClosed
Hammer and Wrench

Services

  • Cell Phones
  • Wireless Plans and Setup
  • Phone Activations
  • Trade-In
  • Device Upgrade
  • Device Protection
  • Tablets
  • Wearables
  • TV and Entertainment
  • Internet
  • Bill Pay and Setup
  • Small Business Solutions

Featured Products at AT&T Mount Sinai

iPhone XS and XR
HDR display that provides the industry’s best color accuracy, true blacks, and remarkable brightness.1 A breakthrough 12MP dual-camera system takes your portraits to the next level with Portrait mode, Portrait Lighting, and all-new Depth Control.
iPad Pro
iPad Pro features a gorgeous Retina display and the powerful A10X Fusion chip.1 And with Apple Pencil and the Smart Keyboard, iPad Pro is even more capable and versatile.2
TV with DIRECTV
Pick whole-home DVR service and channels on-the-go with DIRECTV or streaming only with DIRECTV NOW - the perfect entertainment package for your family.
Wifi Modem
Streaming movies or downloading music? No matter how you use the Internet, we have the perfect high-speed Internet package for you.
Headphones and Stylist
Choose from a wide variety high-performing, stylish accessories including phone cases, speakers, headphones, chargers and more.

Nearby AT&T Locations

AT&T East Northport

10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PMClosed Today
1948 Jericho Turnpike
East Northport, NY 11731
US
Main Number
(631) 462-5800(631) 462-5800

AT&T Bay Shore

10:00 AM - 8:00 PM 10:00 AM - 8:00 PM 10:00 AM - 8:00 PM 10:00 AM - 8:00 PM 10:00 AM - 8:00 PM 10:00 AM - 7:00 PM 10:00 AM - 5:00 PM
583 E Main St
Bay Shore, NY 11706
US
Main Number
(631) 666-9899(631) 666-9899

AT&T Greenlawn

10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 10:00 AM - 7:00 PM 11:00 AM - 5:00 PM
110 Broadway
Suite A
Greenlawn, NY 11740
US
Main Number
(631) 754-8100(631) 754-8100

AT&T Riverhead

10:00 AM - 8:00 PM 10:00 AM - 8:00 PM 10:00 AM - 8:00 PM 10:00 AM - 8:00 PM 10:00 AM - 8:00 PM 10:00 AM - 7:00 PM 10:00 AM - 5:00 PM
1111 Old Country Rd
Riverhead, NY 11901
US
Main Number
(631) 208-0969(631) 208-0969

About AT&T Mount Sinai

Welcome to the Mount Sinai, New York AT&T store. Our address is 5507 Nesconset Highway, Suite 3. We’re conveniently located between Route 25A and Route 347 at the Crystal Brook Hollow Road cross street.

We are happy to serve the community of Bell Teire. You can find us in the King Kullen Shopping Center, next to the Rite Aid pharmacy. We’re less than seven miles from SUNY Stony Brook University and can help you with your tech needs throughout the semester.

Our team members are Apple certified, so you don’t need to travel far to have your Apple devices serviced. Contact us at (631) 743-9807 to see how we can assist you today.

Cell Phone

Cell phones are monumentally popular now, giving you a ton of options to choose from. We carry the best cell phone options at our AT&T store in Mount Sinai. Each device we offer is optimized to work flawlessly on our extensive nationwide cell and data networks. You'll find a selection of world-class cell phones such as Apple iPhone and Samsung Galaxy. We also carry a broad selection of trusted alternatives for those in the market for something different like LG or Motorola.

Stop by AT&T in Mount Sinai to learn more about the cell phones options we have as well as our promotional AT&T offers and news on upcoming products.

Small Business Solutions

Are you making the most of the technology available at our AT&T store in Mount Sinai? If you already trust AT&T for your communication services, such as high-speed broadband internet, phone line or dedicated DSL subscriptions, then thank you. However, we have more to offer: Internet of Things tracking analytics, distributed security systems and secure cloud backup, just to name a few. The products and services that we offer integrate seamlessly into your current operations, helping you gain the market insights and organizational agility necessary to overcome any challenge.

Wireless Plans

Everyone wants great wireless connectivity, but everybody's idea of a great plan isn't the same. That's why AT&T Mount Sinai offers options for everyone. If you're more of an individualist, check out the AT&T pre-paid programs, traveler plans, data-only packages and other special options.

With AT&T group plans, you get big advantages by bringing the whole family together. Save on additional lines or pool your service together with a shared data plan. Whether you want to keep in touch with family or relax and stream TV, AT&T has a wireless plan to fit everyone's lifestyle.

Check out our AT&T Mount Sinai location for details on military discounts, mobile hotspots, quality video streaming and other benefits we offer with our AT&T wireless plans.

Meet your District Manager: Shai Azoulay

Shai Azoulay is an enthusiastic manager who has 17 years of experience in the tech space. For the past three, he has been with AT&T. His business training makes him particularly suited for his position.

Shai creates a positive culture by inspiring his team members to work together to solve problems and provide excellent service. He often rolls up his sleeves and gets to work alongside his staff. He also values nurturing relationships with his customers, building trust and loyalty.

In his spare time, Shai enjoys exploring local town festivals like Bellmore Fair and the Strawberry Festival. He is also a proud supporter of the March of Dimes charity.
AT&T Mount Sinai District Manager Photo